<template>
    <div class="container">
		  <!-- 头部区域 -->
        <mt-header title="页面标题">
            <span slot="left">
              <mt-button icon="back" @click="goBack" v-show="flag">返回</mt-button>
            </span>
       </mt-header>
			 <transition mode="out-in">
      <router-view></router-view>
			 
			 </transition>

      <!-- 底部tabbar -->
      <nav class="mui-bar mui-bar-tab">
			<router-link class="mui-tab-item-syn" to="/home">
				<span class="mui-icon mui-icon-home"></span>
				<span class="mui-tab-label">首页</span>
			</router-link>
			<router-link class="mui-tab-item-syn" to="/member">
				<span class="mui-icon mui-icon-personadd"></span>
				<span class="mui-tab-label">会员</span>
			</router-link>
			<router-link class="mui-tab-item-syn" to="/shopcar">
				<span class="mui-icon mui-icon-extra mui-icon-extra-cart"><span class="mui-badge" id="logo">{{$store.getters.getAllcount}}</span></span>
				<span class="mui-tab-label">购物车</span>
			</router-link>
			<router-link class="mui-tab-item-syn" to="/search">
				<span class="mui-icon mui-icon-search"></span>
				<span class="mui-tab-label">搜索</span>
			</router-link>
		</nav>
    </div>
</template>
<script>
export default {
  data() {
    return {
      flag: false,
      msg: "我是组件App的数据"
    };
  },
  //created:在模板渲染成html前调用，即通常初始化某些属性值，然后再渲染成视图。
  created() {
    this.flag = this.$route.path === "/home" ? false : true;
  },
  methods: {
    goBack() {
      //返回上一级页面
      this.$router.back(-1);
    }
  },
  watch: {
    "$route.path": function(newVal) {
      if (newVal === "/home") {
        this.flag = false;
      } else {
        this.flag = true;
      }
    }
  }
};
</script>
<style scoped>
.container {
  overflow-x: hidden;
}
.mui-bar-tab .mui-tab-item-syn {
  display: table-cell;
  overflow: hidden;
  width: 1%;
  height: 50px;
  text-align: center;
  vertical-align: middle;
  white-space: nowrap;
  text-overflow: ellipsis;
  color: #929292;
}
.mui-bar-tab .mui-tab-item-syn.mui-active {
  color: #007aff;
}
.mui-bar-tab .mui-tab-item-syn .mui-icon {
  top: 3px;
  width: 24px;
  height: 24px;
  padding-top: 0;
  padding-bottom: 0;
}
.mui-bar-tab .mui-tab-item-syn .mui-icon ~ .mui-tab-label {
  font-size: 11px;
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
}
.v-enter {
  opacity: 0;
  transform: translateX(50);
  position: absolute;
}
.v-leave-to {
  transform: translateX(-100%);
}
.v-enter-active,
.v-leave-active {
  transition: all 0.6s ease;
}
.mui-bar {
  -webkit-box-shadow: 0 0 1px rgba(158, 158, 158, 0.53);
}
</style>

